After some advice from Pete Ganzel (thanks allot) i started to take away the sides from the flash body.

I don’t take any responsibilities if other doing the same. This modification will ruin the grantee of the Flash and maybe also the Camera.

Using a thin sharp knife starting to lift the glued sides away.

Then removing the screws on both sides (2+2)

Then gently bending the flash body apart

Then it was ready for modification.